Tutorial by Examples: t

Sometimes we have to resize a UILabel based on dynamic content where the text length is unknown. In this example, width of the UILabel is fixed at 280 points and the height is infinite, lets say 9999. Estimating the frame with respect to the text style and maximumLabelSize. Objective-C UILabel * l...

To create a CSS triangle define an element with a width and height of 0 pixels. The triangle shape will be formed using border properties. For an element with 0 height and width the 4 borders (top, right, bottom, left) each form a triangle. Here's an element with 0 height/width and 4 different color...

A burst is similar to a star but with the points extending less distance from the body. Think of a burst shape as a square with additional, slightly rotated, squares layered on top. The additional squares are created using the ::before and ::after psuedo-elements. 8 Point Burst An 8 point burst a...

DROP PROCEDURE if exists displayNext100WithName; DELIMITER $$ CREATE PROCEDURE displayNext100WithName ( nStart int, tblName varchar(100) ) BEGIN DECLARE thesql varchar(500); -- holds the constructed sql string to execute -- expands the sizing of the output buffer to accomoda...

A closure can be defined with a typealias. This provides a convenient type placeholder if the same closure signature is used in multiple places. For example, common network request callbacks or user interface event handlers make great candidates for being "named" with a type alias. public...

;; disable automatic loading of packages after the init file (setq package-enable-at-startup nil) ;; instead load them explicitly (package-initialize) ;; refresh package descriptions (unless package-archive-contents (package-refresh-contents)) ;;; use-package initialization ;;; install ...

In most cases you want to define several border properties (border-width, border-style and border-color) for all sides of an element. Instead of writing: border-width: 1px; border-style: solid; border-color: #000; You can simply write: border: 1px solid #000; These shorthands are also ava...

cat >file It will let you write the text on terminal which will be saved in a file named file. cat >>file will do the same, except it will append the text to the end of the file. N.B: Ctrl+D to end writing text on terminal (Linux) A here document can be used to inline the content...

app.UseMvc(routes => { routes.MapRoute( name: "default", template: "{controller=Home}/{action=Index}/{id?}"); }); This will match requests for /Home/Index, /Home/Index/123 and /

An element's opacity can be set using the opacity property. Values can be anywhere from 0.0 (transparent) to 1.0 (opaque). Example Usage <div style="opacity:0.8;"> This is a partially transparent element </div> Property ValueTransparencyopacity: 1.0;Opaqueopacity: 0....

To create a list of constants - assign iota value to each element: const ( a = iota // a = 0 b = iota // b = 1 c = iota // c = 2 ) To create a list of constants in a shortened way - assign iota value to the first element: const ( a = iota // a = 0 b // b = 1 c /...

iota can be used in expressions, so it can also be used to assign values other than simple incrementing integers starting from zero. To create constants for SI units, use this example from Effective Go: type ByteSize float64 const ( _ = iota // ignore first value by assigning to b...

Because iota is incremented after each ConstSpec, values within the same expression list will have the same value for iota: const ( bit0, mask0 = 1 << iota, 1<<iota - 1 // bit0 == 1, mask0 == 0 bit1, mask1 // bit1 == 2, mask1 == 1 _, _ ...

Iota can be very useful when creating a bitmask. For instance, to represent the state of a network connection which may be secure, authenticated, and/or ready, we might create a bitmask like the following: const ( Secure = 1 << iota // 0b001 Authn // 0b010 Ready ...

Download the Datastax PHP driver for Apache Cassandra from the Git project site, and follow the installation instructions. We will be using the "users" table from the KillrVideo app and the Datastax PHP driver. Once you have Cassandra up and running, create the following keyspace and tabl...

Often times, responsive web design involves media queries, which are CSS blocks that are only executed if a condition is satisfied. This is useful for responsive web design because you can use media queries to specify different CSS styles for the mobile version of your website versus the desktop ver...

Changing some CSS attribute will trigger the browser to synchronously calculate the style and layout, which is a bad thing when you need to animate at 60fps. DON'T Animate with left and top trigger layout. #box { left: 0; top: 0; transition: left 0.5s, top 0.5s; position: absolute; ...

If you have a multi-parameter type-class with arguments a, b, c, and x, this extension lets you express that the type x can be uniquely identified from a, b, and c: class SomeClass a b c x | a b c -> x where ... When declaring an instance of such class, it will be checked against all other in...

Writes an error message to the console if the assertion is false. Otherwise, if the assertion is true, this does nothing. console.assert('one' === 1); Multiple arguments can be provided after the assertion–these can be strings or other objects–that will only be printed if the assertion is fals...

HTML comments (optionally preceded by whitespace) will cause code (on the same line) to be ignored by the browser also, though this is considered bad practice. One-line comments with the HTML comment opening sequence (<!--): Note: the JavaScript interpreter ignores the closing characters of H...